LXR linux/arch/mips/loongson64/common/init.c

   1/*
   2 * Copyright (C) 2009 Lemote Inc.
   3 * Author: Wu Zhangjin, wuzhangjin@gmail.com
   4 *
   5 * This program is free software; you can redistribute  it and/or modify it
   6 * under  the terms of  the GNU General  Public License as published by the
   7 * Free Software Foundation;  either version 2 of the  License, or (at your
   8 * option) any later version.
   9 */
  10
  11#include <linux/bootmem.h>
  12#include <asm/bootinfo.h>
  13#include <asm/traps.h>
  14#include <asm/smp-ops.h>
  15#include <asm/cacheflush.h>
  16
  17#include <loongson.h>
  18
  19/* Loongson CPU address windows config space base address */
  20unsigned long __maybe_unused _loongson_addrwincfg_base;
  21
  22static void __init mips_nmi_setup(void)
  23{
  24        void *base;
  25        extern char except_vec_nmi;
  26
  27        base = (void *)(CAC_BASE + 0x380);
  28        memcpy(base, &except_vec_nmi, 0x80);
  29        flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
  30}
  31
  32void __init prom_init(void)
  33{
  34#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
  35        _loongson_addrwincfg_base = (unsigned long)
  36                ioremap(LOONGSON_ADDRWINCFG_BASE, LOONGSON_ADDRWINCFG_SIZE);
  37#endif
  38
  39        prom_init_cmdline();
  40        prom_init_env();
  41
  42        /* init base address of io space */
  43        set_io_port_base((unsigned long)
  44                ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE));
  45
  46#ifdef CONFIG_NUMA
  47        prom_init_numa_memory();
  48#else
  49        prom_init_memory();
  50#endif
  51
  52        /*init the uart base address */
  53        prom_init_uart_base();
  54        register_smp_ops(&loongson3_smp_ops);
  55        board_nmi_handler_setup = mips_nmi_setup;
  56}
  57
  58void __init prom_free_prom_memory(void)
  59{
  60}
  61